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Influence of prey availability on the movement pattern of breeding saker falcons(Falco cherrug)in Mongolia

Current Zoology 2024年第6期70卷 810-820页

作者： Batbayar Bold Md.Lutfor Rahman Gankhuyag Purev-Ochir Amarsaikhan Saruul Xiangjiang Zhan Andrew Dixon Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Wildlife Science and Conservation Center of Mongolia Ulaanbaatar 14230Mongolia Cardiff University-Institute of Zoology Joint Laboratory for Biocomplexity Research Chinese Academy of SciencesBeijing 100101China Mongolian Bird Conservation Center Ulaanbaatar 14200Mongolia International Wildlife Consultants Ltd. PO Box 19CarmarthenWalesUK Mohamed Bin Zayed Raptor Conservation Fund Abu DhabiUnited Arab Emirates

As an apex predator in arid steppe,saker falcon plays a crucial role in maintaining ecosystem *** their movement patterns concerning conspecific competition and prey availability is important for their *** aim to understand how movement pattern of breeding saker falcons relates to prey *** adult sakers were tracked during the breeding seasons,using satellite *** the breeding season,sakers exhibited territorial behavior,with minimal overlap in range use among neighboring *** occupied larger areas(mean=2,397 ha,median=1,221 ha),compared to females(mean=1,241 ha,median=554 ha),and it remained consistent throughout breeding *** home range size increased notably during a late nestling stage and post-fledging dependence periods,indicating release from brooding ***,we found a negative relationship between male home range size and prey *** high rodent density areas,males occupied smaller areas(mean=1,135 ha,median=1,034 ha),contrasting with low rodent density areas(mean=6,815 ha,median=6,516 ha).However,no significant relationship was observed between female home range size and prey *** also noted instances of nest abandonment and early dispersal behavior in some females,potentially influenced by a handicapping effect of *** findings offer valuable insight into how prey availability shapes saker falcon space use and defines their spatial requirements for successful *** knowledge is crucial for the conservation and management of globally endangered saker falcons,informing targeted habitat protection and resource management strategies.

关键词： birds of prey distance from the nest home range prey availability territory tagging effect

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